One of the ways I reduce my shopping bills is to reduce our meat intake, so we do 3 meat free sometimes 4 days a week. We started with meat free Monday and went from there. It was a battle at first with the husband who used to think a meal wasn’t complete without meat, but after my persuading/nagging/pushing, call it what you will I won him over.
I started first with mince dishes, reducing the amount of meat I added say to a bolognese by adding less mince and replacing with red lentils, these are the easiest to start with as they are hard to detect in such dishes. Eventually I started with brown and green lentils which you can detect and he grew to like it.
Chilli, I did the same thing I started using less mince and more various beans, he is now a big fan of my 5 bean chilli with zero meat.
The hardest thing to convert him to were vegetable based dishes without meat such as a spinach and potato curry instead of a chicken curry, but by using my leftover scraps of chicken from previous meals which meant only a small amount in a curry with lots of spuds and lots of flavour, he was soon eating veg curries with zero meat.
Meat free Monday soon became 3 meat free days a week and sometimes more. We both still get to enjoy a roast dinner with meat or a chicken dish but not every day.
We both now enjoy meat free days.
Try it, even if its only one day a week, there are so many wonderful vegetables you can eat not to mention lentils and pulses, which are full of protein, add in your herbs and spices and you will end up with some wonderful dishes.